![]() All materials used in its construction are subjected to rigid examination. Joints in steel shell plates are completely watertight and will stay that way for the life of the vessel.īuilding a steel water storage tank is a controlled process. The provision for bottle-tight joints is another area in which steel excels. Engineers can depend on steel to do the job for which it was designed, and its reliability includes the ability to withstand many unexpected or emergency conditions that would spell disaster for concrete tanks. Reliability is a necessity for any water storage vessel. ![]() The minimum tensile strength of steel normally used for water storage vessels is 55,000 pounds per square inch. In this respect, steel surpasses all other materials because it has maximum strength with maximum ductility. There is no guesswork as to tensile strength, ductility or flexiblility.ĭuctility also gives steel the ability to withstand abnormal shocks such as earthquakes, tornadoes, and extreme temperature changes. This uniformity is very important to the design and engineering of a steel water storage tank. Steel is inspected at every point of manufacturing to assure uniformity of strength and thickness. The production of steel plate is a closely controlled procedure, from furnishing the raw material to shipment of the completed product. The purchaser will want to consider the following factors in detail. The rules of the American Water Works Association (AWWA) are then applied to the task of designing the appropriate tank. ![]() It is the purchaser’s responsibility to select the size and type of tank to best meet a set of operating conditions. ![]() Members of the Steel Tank Institute/Steel Plate Fabricators Association (STI/SPFA) give important factors, such as potential service and economic considerations, the careful attention they deserve. When selecting a water storage tank to fill the needs of a city or industry, a comprehensive evaluation should be made of all the alternate designs available. In addition, special tank designs are increasingly requested by end users. The three primary categories of storage tank design are reservoirs, standpipes or elevated tanks. Steel structures can be constructed in a variety of shapes, limited only by the imagination of the designer. Welded steel water storage tanks satisfy the four basic criteria of low cost, reliability, versatility and availability. ![]()
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